Cover-fastening for churns



Mo em M. G. DAVIS 8v J. W. MISTER.

Cover Fastening for Ghurzis, 8w.

No. 241,310. Patented May 10,]881.

N. PETERS. Pholo-Lilhugraphar, Washington, D. C.

UNITED STATES MATH Gr. DAVIS, OF MCOUNE, KANSAS, AND J. WILLIAM MISTER,OF WASH PATENT Trice.

INGTON, DISTRICT OF COLUMBIA.

COVER-FASTENING FOR CYHURNS, 84C.

SPECIFICATION forming part of Letters Patent No.-241,310, dated May 10,1881.

Application filed March 9, 1881. (Mndeh) To all whom it may concern Beit known thatwe,MATH G. DAVIS, a citizen of the United States, residingat McUune, in the county of Crawford and State ofKansas,

and J. WILLIAM MISTER, of YVashington, District of Columbia, also acitizen of the United States, have invented certain new and usefulImprovements in Gover-Fastenings for Churns and other Vessels; and we dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art towhichit appertains to make and use the same, reference being had to theaccompanying drawings, and to the letters or figures of reference markedthereon, which form a part of this specification, and in which- Figure 1is a side elevation of our invention, and Figs. 2 and 3 are detailsectional views thereof.

This invention appertains to fastenings for covers of that class ofchurns termed bodychurns, the action of the body itself, without the aidof a dasher, performing the operation of churning; and it consists indetails of construction appertaining more particularly to the method ofconnecting the cover to and disconnecting it from the vessel or body ofthe churn, hung by trunnions upon and between uprights, or in anuprightframe, with an axle adapted to be revolved by a crank,substantially as hereinafter more fully set forth.

Referring to the accompanying drawings, A indicates the body or vessel,preferably of barrel shape, hung by trunnions at or about its middle inbearin gs attached to the uprights of an upright frame, B, fastened toand supported upon a horizontal or base frame, 0, suitably braced to theupright frame.

D is the cover, preferably fitted withruhber or other packing to preventthe accidental escape around its edges of the cream or milk while thevessel or body is in motion. This cover, which is fitted to close anopening in the end or rest upon a flange around the inner surface of oneend or head of the body or barrel, has an arch or bow, a, which, inaddition to other purposes, serves as a means for removing the cover.

Within a screw-threaded aperture (preferahl y surmounted by a similarcollar) in the arch a works-a screw, E, with its upper end provided witha hand wheel or lover, I), for its manipulation. The lower end of thescrew is adapted to bear upon the cover D. The end or portion of thescrew which works in the bow at has a fine or slow-workin g screw-thread, 0, while its lower portion has a coarse or fast-workingscrew-thread, c. Upon this screw is a fixed collar, D,which, by thedownward movement of the screw E, is carried downward at such a speed asthat, when the lower end o't'the screw has reached the cover, thehorizontal levers, presently described, will be projected through orinto the eyes or staples upon the churn-bod y.

\Nithin an annular groove in the collar D fits a ring or annulus, d,between and to ears upon opposite sides of which are articulated theupper ends of toggle-levers F. The lower ends of these levers arearticulated to the horizontal bolts G, which are adapted to project intoor through eyes 0 upon the churn-body upon the descent of the screw Eand its sleeve or collar D, as above set forth. Upon the screw-thread c,at the lower end of the screw E, is a screw-threaded collar, H, toopposite sides of which are articulated the lower ends of toggle-leversl I, in turn articulated at their upper ends to the levers F. The leversI serve to support and act as fulcrums for the levers F. The lowercollar, H, finally reaches a position as much higher as the uppercollar, D, sinks lower than its original point, which insures theforcing of the lowerend of the screw E down upon the coversimultaneously with the projecting of the bolts G into the eyes orstaples e of the churn body or receptacle, to effect the twofoldfunction of packing the cover into the receptacle-opening and ofsecuring it to the receptacle.

The levers Gare guided in slots 1 in the arch or bearing a. Thisarrangement further permits of the removal of the coverfasteningmechanism simultaneously with the removal of the cover when it isdesired to remove the contents of the churn.

Having thus fully described our invention, we claim and desire to secureby Letters Patentv The combination with the body or vessel A, havingeyes or staples 0, of the cover D, having the hearing or handle a,having a screwthreaded aperture through it, screw E, provided with thefine and coarse screw-threads c c, and a fixed collar, D, with a ring,(I, thereon, and a movable threaded collar, H, levers F I, and bolts Gr,adapted for joint operation substantially as set forth.

In testimony whereofI aflix my signature in 15 presence of twowitnesses.

MATH Gr. DAVIS.

